.PHONY:all
all:test1 test2 test3 

test1:test1.cc
	g++ $^ -o $@ -std=c++11 -g
test2:test2.cc
	g++ $^ -o $@ -std=c++11 -g
test3:test3.cc
	g++ $^ -o $@ -std=c++11 -g

.PHONY:clean
clean:
	rm -f test1 test2 test3 practice
